Huw Davies (@huw) commented about dlls/bluetoothapis/bluetoothapis.spec:
@ stub BluetoothIsDiscoverable @ stub BluetoothIsVersionAvailable @ stub BluetoothRegisterForAuthentication -@ stub BluetoothRegisterForAuthenticationEx +@ stdcall BluetoothRegisterForAuthenticationEx(ptr ptr ptr ptr) bthprops.cpl.BluetoothRegisterForAuthenticationEx
It looks like this is going the wrong way and that `bluetoothapis.dll` was introduced to be called by `bthprops.cpl`.
I'd start switching the existing functions around (i.e. move the existing stubs in `bthprops.cpl` to `bluetoothapis.dll`). Once that is done you can add the new ones.